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Yuki Yamada Last modified date:2018.06.14

Associate Professor / Division for Arts and Science
Division for Humanities and Social Sciences
Faculty of Arts and Science

Graduate School

Academic Degree
Country of degree conferring institution (Overseas)
Field of Specialization
Cognitive Psychology
Total Priod of education and research career in the foreign country
Outline Activities
I am interested in visual cognition and perception pertaining to the following:
- Laterality
- Disgust and Happiness
- Psychological space, time and number
- Attention and awareness for constructing dynamic mental representations
- Effects of emotion, affection, mood, personality, and culture on mental information processing
- Embodied emotion and social emotion
- Animal perception and cognition
- Extreme eating including insects (but I will never eat them)
-Reproducibility, Science communication, and Online experiments
Research Interests
  • - Senses of disgust and happiness
    - Psychological space and time
    - Attention and awareness for constructing dynamic mental representations
    keyword : Disgust, Happiness, Psychological Time, Psychological Space, Attention, Awareness
Academic Activities
1. Yamada, Y., Kawabe, T., Miyazaki, M., Awareness Shaping or Shaped by Prediction and Postdiction, Lausanne: Frontiers Media, 2015.06, [URL], We intuitively believe that we are aware of the external world as it is. Unfortunately, this is not entirely true. In fact, the capacity of our sensory system is too small to veridically perceive the world. To overcome this problem, the sensory system has to spatiotemporally integrate neural signals in order to interpret the external world. However, the spatiotemporal integration involves severe neural latencies. How does the sensory system keep up with the ever-changing external world? As later discussed, ‘prediction’ and ‘postdiction’ are essential keywords here.
For example, the sensory system uses temporally preceding events to predict subsequent events (e.g., Nijhawan, 1994; Kerzel, 2003; Hubbard, 2005) even when the preceding event is subliminally presented (Schmidt, 2000). Moreover, internal prediction modulates the perception of action outcomes (Bays et al., 2005; Cardoso-Leite et al., 2010) and sense of agency (Wenke et al., 2010). Prediction is also an indispensable factor for movement planning and control (Kawato, 1999).
On the other hand, the sensory system also makes use of subsequent events to postdictively interpret a preceding event (e.g. Eagleman & Sejnowski, 2000; Enns, 2002; Khuu et al., 2010; Kawabe, 2011, 2012; Miyazaki et al., 2010; Ono & Kitazawa, 2011) and it’s much the same even for infancy (Newman et al., 2008). Moreover, it has also been proposed that sense of agency stems not only from predictive processing but also from postdictive inference (Ebert & Wegner, 2011). The existence of postdictive processing is also supported by several neuroscience studies (Kamitani & Shimojo, 1999; Lau et al., 2007).
How prediction and postdiction shape awareness of the external world is an intriguing question. Prediction is involved with the encoding of incoming signals, whereas postdiction is related to a re-interpretation of already encoded signals. Given this perspective, prediction and postdiction may exist along a processing stream for a single external event. However, it is unclear whether, and if so how, prediction and postdiction interact with each other to shape awareness of the external world.
Awareness of the external world may also shape prediction and/or postdiction. It is plausible that awareness of the external world drives the prediction and postdiction of future and past appearances of the world. However, the literature provides little information about the role of awareness of the external world in prediction and postdiction.
This background propelled us to propose this research topic with the aim of offering a space for systematic discussion concerning the relationship between awareness, prediction and postdiction among researchers in broad research areas, such as psychology, psychophysics, neuroscience, cognitive science, philosophy, and so forth. We encouraged papers that address one or more of the following questions:
1) How does prediction shape awareness of the external world?
2) How does postdiction shape awareness of the external world?
3) How do prediction and postdiction interact with each other in shaping awareness of the
external world?
4) How does awareness of the external world shape prediction/postdiction?.
1. Kawabe, T., Sasaki, K., Ihaya, K., Yamada, Y., When categorization-based stranger avoidance explains the uncanny valley: A comment on MacDorman and Chattopadhyay (2016), Cognition, 161, 129-131, 2016.09, Artificial objects often subjectively look eerie when their appearance to some extent resembles a human, which is known as the uncanny valley phenomenon. From a cognitive psychology perspective, several explanations of the phenomenon have been put forth, two of which are object categorization and realism inconsistency. Recently, MacDorman and Chattopadhyay (2016) reported experimental data as evidence in support of the latter. In our estimation, however, their results are still consistent with categorization-based stranger avoidance. In this Discussions paper, we try to describe why categorization-based stranger avoidance remains a viable explanation, despite the evidence of MacDorman and Chattopadhyay, and how it offers a more inclusive explanation of the impression of eeriness in the uncanny valley phenomenon..
2. , [URL].
3. Yamada, Y., Harada, S., Choi, W., Fujino, R., Tokunaga, A., Gao, Y., Miura, K., Weight lifting can facilitate appreciative comprehension for museum exhibits, Frontiers in Psychology, 10.3389/fpsyg.2014.00307, 5:307, 2014.04.
4. Yamada, Y., Kawabe, T., Miyazaki, M., Pattern randomness aftereffect, Scientific Reports, 10.1038/srep02906, 3, 2013.10, 我々はたくさんの物体の整列やばらつきの度合いを視覚的に判断できる。しかしながらそれがどのような心的メカニズムによって達成されているのかは全くわかっていなかった。本研究ではパタンランダムネス残効という現象(数秒間ランダムドットを見ていると,その後の刺激が整列して見え,整列刺激を見ていると,その後の刺激がばらついて見えるようになる錯覚)の発見を報告し,その生起を指標として用いることで,視覚パタンのランダムさ処理に関して具体的にどのような内的機序が存在しているのかを明らかにした。具体的には,それは高次の方位処理と関係し,輝度の極性には関係しないような処理であることが判明し,そのような神経的な処理領野は外側後頭複合領域に存在するため,ここが視覚的ランダムネス知覚の責任部位であることを予想した。.
5. Yamada, Y., Kawabe, T., Localizing non-retinotopically moving objects, PLoS ONE, 10.1371/journal.pone.0053815, 8, 1, 2013.01.
6. Yamada, Y., Kawabe, T., Emotion colors time perception unconsciously, Consciousness and Cognition, 10.1016/j.concog.2011.06.016, 20, 4, 1835-1841, 2011.12.
7. Yamada, Y., Miura, K., Kawabe, T., Temporal course of position shift for a peripheral target, Journal of Vision, 10.1167/11.6.6, 11, 6, 2011.05.
8. Yamada, Y., Kawabe, T., Miura, K., Mislocalization of a target toward subjective contours: attentional modulation of location signals, Psychological Research, 10.1007/s00426-007-0109-3, 72, 3, 273-280, 2008.05.
9. Yamada, Y., Kawahara, J., Dividing attention between two different categories and locations in rapid serial visual presentations, Perception & Psychophysics, 69, 7, 1218-1229, 2007.10.
Membership in Academic Society
  • IEICE Human Information Processing
  • Japanese Cognitive Science Society
  • Japan Society for Research on Emotions
  • The Japanese Society for Time Studies
  • The Kyushu Psychological Association
  • Association for Psychological Science
  • The Vision Society of Japan
  • The Japanese Society for Cognitive Psychology
  • The Japanese Psychonomic Society
  • The Japanese Psychological Association
Educational Activities
He is teaching classes of Faculty of Arts and Science and Graduate School of Human-Environment Studies.
In April 2009 - March 2012, he worked as a part-time lecturer at Kyushu Women's University ('Perceptual Psychology', 'Cognitive and Kansei engineering', 'Laboratory Practice of Experimental Psychology I & II').